Stove with internal air chamber



March 11, 1947. A. F. P. STENZY STOVE WITH INTERNAL AIR CHAMBER FiledSept. 10} 1943 r s Shets-Shet 1 March 11, 1947. A. F. P. STENZY STOVEWITH INTERNAL AIR CHAMBER Filed Sept. 10, 1943 3 Sheets-Sheet 2 March11, 1947.- A. F. P. STENZY 2,417,133

STOVE WITH INTERNAL AIR CHAMBER Filed Sept. 10, 1943 3 Sheets-Sheet 3gwuwwim zflfPA zenzy Patented Mar. 11, 1947 UNITED STATES PATENT OFFICESTOVE WITH INTERNAL AIR CHAMBER August F. P. Stenzy, Baltimore, Md.

Application SeptemberlO, 1943, Serial No. 501,857

2- Claims.

This invention relates to a heating stove, and

creased number of heat units per size of stove and quantity of fuel isattained.

Further, I aim to attend the end in view by supplying a superheating orhot air chamber or pot at the top of a stove occupying most of the areathereof and which is adjustable toward and away from the firebed, andwhich may be equipped with any suitable heat outlet means.

The more specific objects and advantages will become apparent from aconsideration of the description following taken in connection withaccompanying drawings illustrating an operative embodiment.

In said drawings:

Figure 1 is a view in elevation of the improved stove;

Figure 2 is a vertical sectional view taken on the line 2-2 of Figure 1;

Figure 3 is a horizontal section taken on the plane of line 3-3 ofFigure 2;

Figure 4 is a, horizontal section taken on the plane of line 44 ofFigure 2;

Figure 5 is a horizontal section taken on the line 5-5 of Figure 2;

Figure 6 is a plan view of a damper closure which may be used at the topof the superheating chamber or pot; and

Figure 7 is a vertical sectional view taken on the line of Figure 6.

Referring specifically to the drawings wherein like reference charactersdesignate like or similar parts, the stove disclosed has a suitableouter casing at I0 generally cylindrical in form and supported as byconventional legs The fire box or base portion of the casing is linedwith firebrick or any equivalent material at l2, at the base of which agrate I3 is provided, the same preferably being round as shown andmounted for rocking on trunnions l4 and I5, suitably journaled in thebrick, the latter extending to the exterior of the casing through itswall and having a head l6 polygonal in cross-section for engagement by acrank or shaker. This grate, as best shown in Figure 4, consists of aplurality of relatively close bars I! providing relatively narrow slotsl8 between them. In addition lugs or upward projections l9 rise from thebars I! at suitable intervals. As a result of this construction thegrate is relatively fiat and the lugs and narrow openings or slots |8prevent the undue dropping of coal therethrough and its consequentwaste.

Coal is supplied to the grate and fire box 2 through a conventionalopening covered by a door hinged to the casing l0. 3

To enable maximum air to enter the stove and issue beneath the firegrate I3, I provide an arcuate space or channel 2| in the top of thewall |2 in communication with the outside atmosphere through one or moreopenings 22 in the casing, and lead downwardly from the channel 2| anysuitable number of grooves or channels 23 which open below the grate l3in the ash chamber or space 24, which may have a removal opening ofconventional design covered by a conventional door 25 hinged to thecasing In.

An important part of my invention consists in using the hot air chamberor pot 26 having a cylindrical side wall 21 as shown and a closed bottomwall 28. This pot is adapted for vertical adjustment relative to thefire bed, as it is supported in a central opening of a ring-like cover29 mounted on the casing, and held in adjusted position in the openingof the ring by any suitable number of bolts 30 screwed on the ring 'andin bearing engagement with the pot. A pair of handles 3| may extend fromthe pot to facilitate handling and adjustment thereof. Also, the pot isopen at the top and may be closed by a cover 32 as shown in Figure 2,the same being removable and having an inwardly extending rim or flange33 telescoped into the pot and centrally having a hot air pipe 34leading therefrom to convey the heated air from the pot.

In lieu of the cover 32 and hot air pipe, I may employ an adjustabledamper construction as disclosed in Figures 6 and 7. This constructionincludes a relatively fiat cover 35 having an out- I side flange 36telescoped over the upper end of the pot and notched as at 31, so thatit will clear the handles 3|. Any suitable number of openings 38 for theemission of heat are provided through cover 35 and they are controlledby a fan-shaped damper 39 pivotally connected by a stud 40, centrally ofthe cover 35, the stud enabling attachment of a crank or the like to asquare head 4| thereof to turn it partially open, or to close theopenings 38' by bringing blades 7 42 into partial or complete registrywith the top of the casing l near ring 29 at 46, and it has aconventional adjustable damper 41 operatively mounted therein.

In actual use, for one example, the pot 21 may have an outside diameterof 14 inches. It will be realized that this covers most of the space atthe top of the casing 10. This pot may be of metal, clay, cast iron, orany other equivalent material. It has been found by tests that with theuse of this pot 26 four times the delivery of heat units is attained aswith an ordinary construction of stove, using the same amount ofordinary egg-size coal. The superheated air may be efficiently directedto the house or rooms Where desired, and the pot is adjustable to obtainmaximum control. The circular cast iron generator 43 is cast in onepiece with the proper inlets and outlets, and the anti-freeze liquidintroduced through the pipe 45 will be vaporized andwill reach theradiators as the hot Water is generated for the hot Water tank; this hotvapor and hot water generator may be of coil shape or-water bag shapewith a single or double compartment and be made of any kind of metal orother material. The structure gives effective control of the heat andenables the use and application of any accessories and controls. Thesame principles may be practiced regardless of the specific fuel used,that is, whether it be gas, electricity, wood, coal,

etc.

The structure also enables the saving of fuel and of metal in itsmanufacture.

Various changes may be resorted to provided that they fall Within thespirit and scope of the invention.

I claim as my invention:

1. A stove of the class described having a casing, a pot disposed in,the upper portion thereof 4 and relatively large with respect to thecasing, and means to heat said pot, a smoke-discharge flue leading fromthe casing at one side of the pot relatively close to the top of thecasing, and a circular generator about the lower portion of the pot,said pot being adjustable in the casing relatively to its firepot and tothe generator and flue.

2. A stove comprising a casing having a flanged opening in the topthereof, a pot extending into the casing, through said opening, andadjustable lengthwise of the firepot thereof, means carried by theflange for engaging the pot to retain the latter in various positions,said pot being spaced from the casing wall, and a circular generatorlocated between the pot and casing wall and relative to which the pot isadjustable.

AUGUST F. P. STENZY.

REFERENCES CITED j The following references are of record in the file ofthis patentz' UNITED STATES PATENTS Number Name Date 563,902 AndersonJuly 14, 1896 934,739 'Madsen Sept. 21, 1909 602,814 Clare Apr. 19, 1898292,475 Eckert Jan. 29, 1884 1,608,698 Coulston Nov. 14, 1911 1,345,887Ryer July 6, 1920 107,806 Parrish Sept. 27, 1870 76,759 Gregory Apr. 14,1868 1,707,731 Kerch Apr. 2, 1929 626,660 Adams June 13, 1899 165,038Spencer June 29, 1875 232,787 Watson Sept. 28, 1880

